KR20160109080A - Carriage for Bridge - Google Patents

Abstract

The present invention relates to a truck for bridge maintenance to inspect and repair a girder of a bridge supported by spaced piers comprising: a truck body having a space therein of which the upper part is opened and arranged between girders of a bridge to be moved in the longitudinal direction of the girder and adjustable in a width direction according to an interval between the girders; and a plurality of wheel supports which are protrudingly installed on both sides respectively on an upper side of the truck and has a plurality of wheels at an end portion side where the wheels are mounted on a flange part of the girder, such that the present invention can strain steel wire of a prestressed concrete (PSC) girder while running between girders of a bridge and inspect and repair all parts of the girders easily and safely, thereby improving working convenience and safety.

Description

[0002] Carriage for Bridge [0003]

More particularly, the present invention relates to a ladder for bridge work, and more particularly, to a ladder for a bridge work, more particularly, to a ladder of a girder, a safety check work, and a maintenance work for moving a girder between a girder and a girder at a site where a prestressed concrete (PSC) And more particularly, to a bogie device for a bridge work capable of being reinforced.

Generally, bridges include bridges or alternation, a plurality of girders connected at both ends to the bridges or alternations and spaced apart in the width direction of the bridges, and a bottom plate mounted on top of the girders.

A conventional bottom plate is constructed by installing a girder on a pier, installing a mold for a bottom plate on the upper part of the girder installed, and curing the concrete by placing the concrete on the mold for the bottom plate.

Among these bridge types, girder bridges are to be applied to short bridges having a bridge of less than 30m by supporting both ends of the girder at spaced bridges.

As mentioned above, the girder bridges are widely used in spans shorter than 30 m. However, the girder bridges are gradually increasing due to the introduction of prestressing and the use of high-strength concrete.

In other words, the use of I-type PSC bridges, which have lower material cost and better workability, is increasing, as the prestressing technology using the steel wire is rapidly developed during the recent bridge construction. These PSC bridges should be tensed at the end or middle part of the girder. As the service life is increased after construction, periodical safety inspection and repairing and reinforcement are required due to cracking due to compressive force of PSC girder.

There is the Korean Utility Model Registration No. 0397441 'Moving Balance for Bridge Maintenance' (registered on September 26, 2005) that can repair and repair the girders and bridge piers of bridges.

Referring to FIG. 1, the 'moving carriage for bridge maintenance' is provided with a guide rail 20 for guiding a moving carriage to the bottom or side of the upper slab 10 of the bridge in the longitudinal direction, And a cage 40 coupled with the roller 30 to form an internal space on which the operator can ride.

Since the 'moving carriage for maintenance of the bridge' requires the additional guide rail 20 to be installed on the bottom or side of the upper slab 10 of the bridge, it must be designed and installed in accordance with the bridge, There is a problem that cost is incurred.

Particularly, there is a problem that the guide rail 20 may be deformed and damaged when it is held for a long period of time in a state where the guide rail 20 is installed, resulting in maintenance and repair costs.

The 'moving carriage for maintenance of the bridge' moves along the guide rail 20 installed in accordance with the bridge, and the width of the roller 30 can not be controlled during operation, which makes it impossible to use the bridge in a bridge other than the bridge.

In addition, the 'moving carriage for bridge maintenance' can not be removed or folded by the roller 30 during movement, so that it is impossible to move the bridge 30 due to the structure between the girders of the bridge, .

In addition, there is a risk that an accident that the roller 30 disengages the guide rail 20 occurs because there is no safety device for the 'bridge for maintenance of the bridge', and there is a problem that the work safety is low have.

2, the 'Bridge Checking Apparatus' (Registered on Aug. 18, 1998) has a rail 15 and a rack 16 provided on the girder 14 in the longitudinal direction thereof, The rail 20 is provided on the rail 15 with a length corresponding to the width of the bridge and is provided with a pulley 24. The rail 20 is supported by the rail 21 in the longitudinal direction A rack 22 is attached to the rail 21 and a cage 30 having a pulley 32 is attached to the rail 21. The frame 20 and the cage 30 are connected to the rails 21 by detachable drive devices 40A, And the conveying gear 43 can be engaged with the racks 16 and 22 of the rails 15 and 21 in the direction of the rails 15 and 21, respectively.

3, the Korean Utility Model Registration No. 0129416 'Bridge Checking Apparatus' (Registered on Aug. 18, 1998) has a rail 15 at a lower end portion of the side facing the girders 14 and parallel to each other in the longitudinal direction of the girder. And axles 21 and 22 and a drive mechanism 30 and 30a attached with a pulley 23 rolling on the rail 15 are mounted on both ends of the cage 20 in the upper portion thereof, (20) can be moved.

Referring to FIG. 4, a 'portable bridge checking device' (Registered on Nov. 23, 2009) is disclosed in Korean Patent Registration No. 0929249, which is a device for connecting a plurality of fixing tables 110 fixed in the longitudinal direction to the bottom surface of a bridge A pair of guide rails 100 and 100 'are constituted and a conveying part 200 for conveying the check base 400 by the rotation of rollers respectively mounted on the pair of guide rails 100 and 100' And a mounting table 400 is mounted on the pair of guide rails 100 and 100 'to house the transfer unit 200. The mounting table 400 is fixed to the mounting table 300.

Referring to FIG. 5, a movable bridge check bench 100 for checking the bottom surfaces of a bridge pier 10 and a top plate 20 is disclosed in Korean Patent Registration No. 1241305, A plurality of first rail struts 110 fixedly spaced apart from each other; A plurality of second rail supports 120 and 120 'horizontally fixed to the bottom surface of the upper plate 20 while being spaced apart from each other by a predetermined distance; A pair of vertical rails 130 and 130 'spaced vertically from the first rail support 110 at predetermined intervals and formed with a gear 131 on the bottom surface thereof; One of which is connected to the upper vertical rail 130 of the pair of vertical rails 130 and 130 'while being horizontally installed on the second rail supports 120 and 120' A pair of horizontal rails 140 and 140 '; The power transmission gear 151a coupled to the gears 141 and 131 of the pair of the horizontal rails 140 and the vertical rails 130 is rotated by the pair of horizontal rails 140 and 140 ' A moving part 150 for moving the inspection table 170 along the vertical rails 130 and 130 '; A connecting post 160 connecting the moving part 150 and the check base 170; And a check block 170 fixed to the connecting post 160.

Korean Patent Registration No. 0160337 'Bridge Checking Device', Domestic Utility Model Registration No. 0129416 'Bridge Checking Device', Domestic Patent Registration No. 0929249 'Portable Bridge Checking Device', Domestic Patent Registration No. 1241305 'Portable Bridge Inspection' The railroad car must have a separate rail mounted to the pier or the girder to move the pulley or the inspection stand on which the operator is to ride, which causes a problem of installation cost.

Since the rail is deformed during use, it is troublesome to perform the maintenance periodically, and there is a problem that a cost and a separate operation are required.

There is a problem that when the pulley or the inspection stand is separated from the rail along the rail during the movement, a large accident occurs, and the rail can be used only on the bridge on which the rail is installed.

It is an object of the present invention to provide a railway cargo truck which is capable of tightening a steel wire of a PSC girder while traveling between a girder and a girder of a bridge and can safely and easily check and repair all portions of the girder.

The object of the present invention is to provide a railway cargo handling device for checking or repairing a girder of a bridge supported by a spaced pier,

A bogie main body having a space in which an upper portion is opened inside the bogie and is disposed between the girders of the bridge and moves in the longitudinal direction of the bogie, And

And a plurality of wheel supports mounted on the flange portion of the girder at one end side thereof and projecting from the upper side of the bogie main body to both sides thereof.

The present invention has the effect of enhancing work convenience and safety by making it possible to tighten the steel wire of the PSC girder while running between the girder and the girder of the bridge and to securely and easily check and repair all portions of the girder.

The present invention relates to a method of controlling the width and angle of a running wheel by moving a traveling wheel on a flange portion of a girder between a girder of a bridge and running on the flange portion of the girder, It is possible to reduce the cost required for the inspection and repair work of the girder.

The present invention is advantageous in that manufacturing cost is low, maintenance and management are easy, and cost is reduced because a traveling wheel is mounted on a flange portion of a girder without a separate rail and travels on a flange portion of the girder.

Figs. 1 to 5 are views showing a moving lane for conventional bridge maintenance
Fig. 6 is a perspective view showing a part of a bridge in which a luggage apparatus for a bridge work according to the present invention is used; Fig.
Fig. 7 is a perspective view showing a truck-operating truck according to the present invention.
FIG. 8 is a front view showing an embodiment of a luggage apparatus for a bridge work according to the present invention
9 is a view showing an example in which a luggage apparatus for a bridge work according to the present invention is used
Fig. 10 is a front view showing an example in which the angle of the wheel support is adjusted in the luggage apparatus for a bridge work according to the present invention
Fig. 11 is a front view showing another embodiment of the luggage apparatus for a bridge work according to the present invention
FIG. 12 is a perspective view showing a structure of a auxiliary wheel in the cargo handling apparatus according to the present invention. FIG.
13 is a view showing an example of operation of the auxiliary wheel unit in the luggage apparatus for a bridge work according to the present invention
FIG. 14 is a view showing an example of a support for a ground in a car for a bridge work according to the present invention

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

FIG. 6 is a perspective view showing a part of a bridge in which a bridge operation apparatus according to the present invention is used. Referring to FIG. 2, the bridge includes a plurality of bridge columns 1 spaced apart from each other in the longitudinal direction of the bridge, A plurality of girders 2 are arranged on the upper part of the girder 1 so as to be spaced apart and a bridge slab is installed on the upper part of the girder 2. [

The girder 2 includes an H beam and an I beam made of a steel material, and an H type I beam made of concrete.

The present invention relates to a cargo handling apparatus for a bridge work for inspecting or repairing a girder (2) of a bridge supported by a bridge pier (1) spaced from the bridge, characterized in that the cargo handling apparatus So that the girder 2 of the bridge can be checked or repaired.

7 is a view showing an example of a luggage apparatus for a bridge work according to the present invention. Referring to Fig. 7, the luggage apparatus for a bridge work according to the present invention includes a space having an open top, (100) disposed between the girders (2) and moving in the longitudinal direction of the girders (2), and a pair of projections And a plurality of wheel supports 200 having traveling wheels 300 mounted on the supporting portions 2a.

The truck main body 100 includes a plurality of lower transverse frame members 101 disposed laterally between the girders 2 and spaced apart from each other in the longitudinal direction of the girder 2, A lower vertical frame member 102 disposed at both ends of the girder 2 in the longitudinal direction of the girder 2 and a lower vertical frame member 102 supported by the lower vertical frame member 102, The lower transverse frame member 101 and the lower transverse frame member 101. The lower transverse frame member 101 is fixedly mounted on the lower transverse frame member 101 or the lower transverse frame member 102 and is spaced apart from both ends of the lower transverse frame member 101 in the longitudinal direction of the girder 2. [ An upper transverse frame member 104 spaced apart from the upper portion of the lower transverse frame member 101 and fixed to the upper vertical frame member 103, The upper surface of the member 102 Spaced apart by and includes a side frame member 105 is fixed to the upper longitudinal frame member 103.

The bogie main body 100 includes a bottom plate member 100a serving as a pedestal for a worker or an inspector to ride on, a worker carrying around the bottom plate member 100a, A lower transverse frame member 101 and an upper transverse frame member 103 fixed to the upper vertical frame member 103 and the upper transverse frame member 103. [ And the side frame members 105 which are fixed to the lower vertical frame member 102, the upper vertical frame member 103 and the upper vertical frame member 103, respectively, For example.

The wheel support frame 200 is installed such that an end portion of the wheel support frame 200 facing the outside of the vehicle body 100 faces upward so that the driving wheel can stably be seated on the flange portion 2a of the girder 2 .

It is preferable that the wheel support 200 is provided in at least three rows along the longitudinal direction of the truck main body 100, that is, along the longitudinal direction of the girder 2 on which the truck main body 100 moves.

When the wheel support 200 is folded, when the wheel support 200 is folded in any direction during movement of the car body 100 in the longitudinal direction of the girder 2, So that the vehicle can be stably driven by the traveling wheels of the vehicle.

A safety catch 201 protruding further outward from the bogie body 100 is installed at one end of the wheel support 200 at a position where the traveling wheel 300 is mounted.

The safety catching portion 201 is caught on the flange portion 2a even if the traveling wheel 300 moves between the girders 2 during the movement of the bogie main body 100 and is released from the top of the flange portion 2a Thereby preventing the truck body 100 from falling down.

Preferably, the luggage operation apparatus for a bridge work according to the present invention further includes a safety handle member 400 mounted on the bogie main body 100.

The safety knob member 400 can be operated by a worker on the bogie main body 100 or by a handle gripped by the bogie during the movement of the bogie main body 100, Or can be held by the inspector by hand, thereby improving work safety.

The safety handle member 400 is disposed in the width direction of the bogie main body 100 and is mounted on both side surfaces of the bogie main body 100 at both end portions thereof. As an example.

Preferably, the length of the safety handle member 400 is adjustable when the width direction of the bogie body 100 is adjusted as described below.

The safety handle member 400 is divided into two parts, and two parts separated from each other in the width direction of the main body 100 are movably coupled to each other so that the length of the safety handle member 400 can be adjusted in the width direction.

The present invention provides a truck-mounted lorry according to the present invention, which is rotatably installed on the lorry main body 100 and is capable of lifting the lorry in the space of the lorry main body 100 and moving the lorry main body 100 to the outside of the lorry main body 100 And a support base 500 for supporting the base.

The support base 500 includes a support base 500 which is detachably inserted from the top to the bottom and rotatably engaged with the base support base 500, A portion of the lower side is inserted into the portion 110 to be rotatably engaged.

The supporting frame inserting unit 110 includes a first supporting bracket 111 provided on the side frame member 105 and coupled to the supporting base 500 through the base frame; And a second support bracket 112 provided on the lower vertical frame member 102 and engaged with a lower end of the base support 500. [

A circular insert bar 501 is inserted into the first support bracket 111 and the second support bracket 112 and is rotatably coupled to the lower support bracket 500.

The support base 500 for the airplane is described in detail below with a lifting device such as a chain block provided at an upper end thereof.

The present invention relates to a balancing apparatus for a bridge work which is provided on both side portions of the balancer main body 100 and includes a pair of auxiliary wheel portions 600 which are respectively in contact with side surfaces of flanges 2a facing each other between the girders 2 ). ≪ / RTI >

The auxiliary wheel portion 600 is provided on the side of the flange portion 2a of the girder 2 between the girders 2, that is, on the side of the flange portion 2a facing each other between the girders 2 So that the bogie main body 100 can be stably moved in the longitudinal direction of the girder 2 while being rolled in contact with the bogie main body 100 while the traveling wheel 300 is rolled on the flange portion 2a, Thereby preventing the vehicle body 100 from being shaken or being separated from the traveling body.

It is preferable that the bogie body is adjustable in the width direction according to the interval between the girders.

8, the lower transverse frame member 101 includes a first lower transverse frame 101a and a second lower transverse frame 101b connected to the lower vertical frame member, and a first lower transverse frame 101a , And a third lower horizontal frame (101c) connecting the second lower horizontal frame (101b), and the upper horizontal frame member (104) includes a first upper horizontal frame 104a, a second upper horizontal frame 104b, and a third upper horizontal frame 104c connecting the first upper horizontal frame 104a and the second upper horizontal frame 104b.

The third lower transverse frame 101c and the third upper transverse frame 104c may be manufactured in various lengths to form the third lower transverse frame 101c and the third upper transverse frame 104c It is possible to control the width of the bogie body 100 and the distance between the traveling wheels 300 by using one of them.

In addition, the first lower horizontal frame 101a, the second lower horizontal frame 101b, and the third lower horizontal frame 101c are formed with a plurality of bolt holes communicating with each other and selectively bolted together, The first lower horizontal frame 101a, the second lower horizontal frame 101b and the third lower horizontal frame 101c are provided with a plurality of bolt holes communicating with each other to be selectively bolted, The width of the bogie body 100 and the distance between the traveling wheels 300 can be adjusted by bolting with a bolt.

That is, the bogie body 100 may be divided into a plurality of bodies, each of which has a front portion and a rear portion coupled to each other in the width direction, as described above, and the width direction length may be adjusted by replacing one of the plurality of bodies.

The bogie main body 100 is divided into a plurality of bodies each having a front portion and a rear portion coupled to each other in the width direction, a plurality of first bolt holes are formed in one body in the width direction, At least one second bolt hole communicating with the ball may be formed so that the second bolt hole is communicated with one of the plurality of first bolt holes and the bolt is inserted and bolted to adjust the length in the width direction. Preferably, the plurality of second bolt holes are communicated with the plurality of first bolt holes, and the bolts are passed through the plurality of bolt holes to bolt-fasten the front and rear parts, respectively. .

In addition, the front and rear portions of the bogie body 100 are divided into two bodies that are movably coupled to each other in the width direction in the running direction of the bogie body 100, A structure in which at least one of the bodies can be fixed by a fixture such as a bolt can be used.

In addition, it will be appreciated that other examples of adjusting the distance between the traveling wheels 300 by controlling the width of the bogie body 100 may be modified.

In this case, the bottom plate member 100a may be manufactured to have a size corresponding to the width direction length of the front and rear portions of the truck body 100, or may be formed to have two bodies And a structure in which at least one of the two bodies can be fixed by a fixture such as a bolt at a position where the body is moved.

Referring to FIG. 9, the truck main body 100 includes a traveling wheel 300 (see FIG. 9) provided on the wheel support base 200, Is raised on the flange portion 2a of the girder 2 to move in the longitudinal direction of the girder 2. [

The auxiliary wheel portion 600 provided on the side of the bogie body 100 contacts the side surface of the flange portion 2a on which the traveling wheel 300 is mounted and rolls.

It is preferable that the bogie main body 100 is provided with a safety support bar 120 which is disposed in the width direction and protrudes from both sides of the bogie main body 100 more than an end of the wheel support base 200, The driving wheel 120 is longer than the wheel support 200 in the lateral direction of the car body 100 so that the driving wheel 300 is detached from the flange or the wheel support 200 is detached from the flange portion 2a The safety support bar 120 is caught on the flange portion 2a to prevent the bogie main body 100 from falling down.

Fig. 10 is a front view showing an example in which the angle of the wheel support 200 is adjusted in the ladle truck according to the present invention. The upper surface of the flange 2a of the girder 2 is generally formed as shown in Fig. 9 And has a sloped surface of a thickness that becomes thicker toward the abdomen side of the girder 2, or has a plane.

Accordingly, it is preferable that the angle of the wheel support 200 is adjustable so that the driving wheel 300 can be stably mounted on the flange portion 2a of the girder 2 so as to be able to roll.

The side of the bogie main body 100 is provided with a support protrusion 130 protruding upward and the bogie support 200 can be protruded from the side of the bogie main body 100 in the bogie main body 100 There is provided a fixed support support portion.

A plurality of first bolt holes 131 are formed in the wheel support 200. The support fixture includes a plurality of first bolt holes 131 formed in the first support portion 200, A plurality of second bolt holes 132 communicating with the bolt holes 131 and spaced apart from each other in the lateral direction of the truck main body 100 and a plurality of first bolt holes 131 formed in the support bolt holes 131, And a third bolt hole 133 communicating with the first bolt hole 131 provided at one end side of the wheel support 200.

The supporting frame fixing parts are provided on both end sides of the upper horizontal frame member 104, that is, by forming a plurality of second bolt holes 132 on both end sides of the horizontal frame member, For example.

The wheel support 200 is bolted to one of the plurality of first bolt holes 131 and one of the second bolt holes 132 and is coupled to the other one of the plurality of first bolt holes 131 Is bolted through the third bolt hole 133 and fixed firmly in a state of being inclined at the same slope as the upper surface of the flange portion 2a.

When the upper surface of the flange portion 2a is flat, a plurality of the first bolt holes 131 and the plurality of second bolt holes 132 are bolted to the wheel support 200, Lt; / RTI >

Accordingly, it is noted that the wheel support 200 may be modified in the manner as described above, and may be modified to another example in which the angle of inclination can be adjusted.

11, at least one of the plurality of traveling wheels 300 is connected to a driving wheel (not shown) driven by a motor 310, So that the bogie main body 100 can be moved forward and backward while the driving wheels are rotated by the operation of the motor 310 so that the bogie main body 100 can be stopped.

In other words, the bridge operation truck according to the present invention further includes a motor 310 for rotating any one of the plurality of traveling wheels 300, so that the truck body 100 is driven by the operation of the motor 310 Type, so that the convenience of the operation is further improved.

The motor 310 is connected to the rotating shaft of the traveling wheel 300 in a gear structure to transmit rotational force. The gear structure for transmitting rotational force can be variously modified according to the design, Gear structure can be used.

12 is a perspective view illustrating an example of the auxiliary wheel unit 600. The length of the auxiliary wheel unit 600 protruding in the lateral direction of the car body 100 is adjustable.

The auxiliary wheel portion 600 includes a wheel support bolt 610 screwed to a side surface of the bogie main body 100 to adjust the length of the auxiliary bogie 600 protruding in the lateral direction of the bogie main body 100 .

The main body 100 is provided with a guide nut part 620 through which the wheel supporting bolt part 610 is threadedly coupled to the side frame member 105.

That is, the wheel supporting bolt portion 610 is threaded through the guide nut portion 620 so that the protruding length of the wheel supporting bolt portion 610 in the lateral direction of the car body 100 can be adjusted.

13, the wheel supporting bolt 610 is rotated to adjust the length of the auxiliary wheel 600 protruding in the lateral direction of the car body 100, So as to be brought into contact with the side surface of the flange portion 2a.

That is, the length of the auxiliary wheel portion 600 protruding in the lateral direction of the car body 100 along the interval between the flange portions 2a of the girder 2 on which the traveling wheel 300 is mounted moves So that the auxiliary wheel portion 600 closely contacts the side surface of the flange portion 2a of the girder 2 and is rolled so as to more stably maintain the running of the bogie body 100. [

Referring to FIG. 14, the support base 500 includes a fixing ring portion 521 that can be fixed by hanging a lifting device such as a chain block on the upper portion. The fixing ring portion 521, The weight block is used to raise the weight when the weight block needs to be lifted during the maintenance work or maintenance work, thereby improving the work convenience.

The base support 500 includes a vertical support 510 vertically erected and rotatably coupled to the bogie main body 100; And

And a transverse support 520 which is horizontally disposed and fixed to the upper end of the vertical support 510 and has a fastening part 521 for fastening a lifter on the end.

The support base 500 includes a truss support 530 having one end fixed to the vertical support 510 and the other end fixed to the horizontal support 520 to support the vertical support 510 The vertical support 510 is further reinforced.

The insertion rotation bar portion 501 is formed at the lower end of the vertical support 510.

The supporting base 500 may be rotated so that the end side of the transverse support 520 may be positioned inside the bogie main body 100 or outside the bogie main body 100. In other words, the support base 500 can be moved from the inside to the outside of the bogie body 100 by lifting the weight when the weight is lifted by the lifting device such as the chain block, And may be moved from the outside of the bogie body 100 to the inside of the bogie body 100.

The present invention can relieve the steel wire of the PSC girder (2) while running between the girder (2) and the girder (2) of the bridge and securely and easily check and repair all parts of the girder It improves convenience and safety.

The present invention is characterized in that a traveling wheel 300 is mounted on a flange portion 2a of a girder 2 between girders 2 of a bridge and runs on the flange portion 2a of the girder 2, It is possible to adjust the angle of the girder 2, and also it is possible to fold the running wheel, so that it is possible to check and repair the girders 2 of the various bridges so that the cost for the inspection and repair work of the girder 2 can be reduced.

The present invention is characterized in that the traveling wheel 300 is mounted on the flange portion 2a of the girder 2 without a separate rail and travels on the flange portion 2a of the girder 2, And the cost is reduced accordingly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the above teachings. will be.

1: Pier 2: Girder
2a: flange portion 3: bridge slab
100: Bogie main body 110:
120: safety support bar 200: wheel support
201: safety catch part 300: driving wheel
310: motor 400: safety handle member
500: Support for heavy equipment 510: Vertical support
520: transverse support 521:
530: truss support 600: auxiliary wheel portion
610: wheel support bolt portion

Claims (15)

The present invention relates to a balancing device for a bridge work for checking or repairing a girder of a bridge supported by a spaced pier,
A bogie main body having a space in which an upper portion is opened inside the bogie and is disposed between the girders of the bridge so as to move in the longitudinal direction of the bogie and adjust the length in the width direction according to the interval between the bogie; And
And a plurality of wheel supports mounted on the flange portion of the girder at one end thereof, the wheel supports being projected from the upper side of the car body to both sides thereof. The method according to claim 1,
Wherein the bogie body is divided into a plurality of bodies each having a front portion and a rear portion coupled to each other in the width direction, and the length of the bogie body is adjusted by replacing one of the plurality of bodies. The method according to claim 1,
The bogie body is divided into a plurality of bodies each having a front portion and a rear portion coupled to each other in a width direction, a plurality of first bolt holes are formed in a width direction of the body, and at least one And the second bolt hole is communicated with one of the plurality of first bolt holes, and the bolt is inserted and bolted to adjust the length in the width direction. The method according to claim 1,
Wherein a front portion and a rear portion of the truck main body are separated into two bodies which are movably coupled to each other in the width direction and a position where at least one of the two bodies is moved is fixed by a fastener. Work truck. The method according to claim 1,
And a safety hook portion protruding further toward the outside of the bogie main body at a portion where the traveling wheel is mounted is provided at one end side of the wheel support bogie. The method according to claim 1,
Wherein the wheel supports are adjustable in angle. The method according to claim 1,
Further comprising auxiliary wheel portions respectively provided on both side portions of the bogie body and contacting the sides of flanges facing each other between the girders. The method of claim 7,
Wherein the auxiliary wheel portion is adjustable in length to protrude in the lateral direction of the car body. The method according to claim 1,
Further comprising a safety handle member mounted across the width direction of the truck body. The method of claim 9,
Wherein the safety handle member is divided into two parts, and two parts separated from each other in the width direction of the main body are movably coupled to each other so that the length of the safety handle member can be adjusted in the width direction. The method according to claim 1,
Further comprising a motor for rotating any one of the plurality of traveling wheels. The method according to claim 1,
Wherein the bogie main body is provided with a safety support bar which is disposed in the width direction and which is further projected on both sides of the bogie body than the end of the wheel support. The method according to claim 1,
Further comprising a support for a machine which is rotatably installed on the bogie main body and is capable of lifting the bogie in the space of the bogie main body and moving the bogie to the outside of the bogie main body. 14. The method of claim 13,
In the above-described air support,
A vertical support vertically erected and rotatably coupled to the bogie body;
A transverse support having transversely disposed upper end portions of the vertical support members and having a fixing annular portion which can be fixed to the end side by hanging a lifter; And
And a truss support member having one end fixed to the vertical support and the other end fixed to the horizontal support to support the vertical support. 14. The method of claim 13,
Wherein the bogie main body is provided with a support boss insertion portion into which the base support is detachably inserted and rotatably engaged.

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